Tractor cab



FIG. 1 is a perspective view as seen from the right front of the tractor cab embodying the new design;

FIG. 2 is a left side elevation view thereof;

FIG. 3 is a front elevation view thereof;

FIG. 4 is a right side elevation view thereof;

FIG. 5 is a rear elevation view thereof;

FIG. 6 is a top plan view thereof;

FIG. 7 is a rear elevation view of a tractor cab showing a second embodiment of our new design, the sole difference being in the reduced width of the fenders;

FIG. 8 is a right side elevation view of FIG. 7.

The broken lines in the drawings are for illustrative purposes only. 

The ornamental design for a tractor cab, substantially as shown and described. 